<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Bootstrap</title>
  <link href="../lib/css/bootstrap.min.css" rel="stylesheet">

</head>
<body>
<div class="container">
  <h1>辅助类</h1>
  <h3>情境文本颜色</h3>
  <p class="text-muted">text-muted</p>
  <p class="text-primary">text-primary</p>
  <p class="text-success">text-success</p>
  <p class="text-info">text-info</p>
  <p class="text-warning">text-warning</p>
  <p class="text-danger">text-danger</p>
  <h3>情境背景色</h3>
  <p class="bg-primary">bg-primary</p>
  <p class="bg-success">bg-success</p>
  <p class="bg-info">bg-info</p>
  <p class="bg-warning">bg-warning</p>
  <p class="bg-danger">bg-danger</p>
  <h3>关闭按钮</h3>
  <button type="button" class="close" aria-label="Close"><span aria-hidden="true">&times;</span></button>
  <h3>三角符号</h3>
  <span class="caret">caret</span>
  <h3>快速浮动</h3>
  <div class="pull-left">pull-left</div>
  <div class="pull-right">pull-right</div>
  <h3>清除浮动</h3>
  <div class="clearfix"></div>
  <h3>让内容块居中</h3>
  <div class="center-block">center-block</div>
  <h3>显示或隐藏内容</h3>
  <div class="show">show</div>
  <div class="hidden">hidden</div>
  <h3>屏幕阅读器和键盘导航</h3>
  <a class="sr-only sr-only-focusable" href="#content">Skip to main content</a>
</div>
<script src="../lib/jquery.min.js"></script>
<script src="../lib/bootstrap.min.js"></script>
</body>
</html>